From mboxrd@z Thu Jan  1 00:00:00 1970
X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/4088
Path: main.gmane.org!not-for-mail
From: Hans Hagen <pragma@wxs.nl>
Newsgroups: gmane.comp.tex.context
Subject: Re: special math minus
Date: Thu, 15 Feb 2001 16:52:38 +0100
Sender: owner-ntg-context@let.uu.nl
Message-ID: <3.0.6.32.20010215165238.01658800@server-1>
References: <3.0.6.32.20010215141710.0195d810@server-1>
NNTP-Posting-Host: coloc-standby.netfonds.no
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
X-Trace: main.gmane.org 1035394777 22763 80.91.224.250 (23 Oct 2002 17:39:37 GMT)
X-Complaints-To: usenet@main.gmane.org
NNTP-Posting-Date: Wed, 23 Oct 2002 17:39:37 +0000 (UTC)
Cc: ntg-context@ntg.nl
Original-To: Taco Hoekwater <taco@elvenkind.com>
In-Reply-To: <3A8BE62C.512611BB@elvenkind.com>
Xref: main.gmane.org gmane.comp.tex.context:4088
X-Report-Spam: http://spam.gmane.org/gmane.comp.tex.context:4088

At 03:22 PM 2/15/01 +0100, Taco Hoekwater wrote:
>Hans Hagen wrote:
>> 
>> Hi,
>> 
>> Sometimes a special minus sign is used to distinguish between a - b and -b.
>> In the second case, the sign is alightly raised and looks more like a
>> hyphen than a math minus.
>> 
>> Is there a pre-coocked macro for that? [the problem is that \hbox's are not
>> zware of superscript status and therefore cannot be used,
>
>Not one I know of, so you need a mathchoice instead. Something like this

if you don't know it, then there is no -)    

>should work:
>
>\def\doneg{\mathord{{#1\raise.2ex\hbox{{#1 -}}}}}
>
>\def\negative{\mathchoice{\doneg{\tf}}{\doneg{\tf}}{\doneg{\tfx}}{\doneg{\t
fxx}}}

Thanks, I now have: 

\def\domminus#1#2%
  {\mathord{{#2\raise.#1ex\hbox{#2-}}}}

\def\mminus
  {\mathchoice
     {\donegative5\tf}
     {\donegative5\tf}
     {\donegative4\tfx}
     {\donegative3\tfxx}}

$\negative10^{\negative10^{\negative10}}$

Hans
-------------------------------------------------------------------------
                                  Hans Hagen | PRAGMA ADE | pragma@wxs.nl
                      Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
 tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------